This 375-million-year-old fish, the closest known relative of the ancestors of limbed animals such as humans, likely evolved the foundation for rear legs even before the move to land, researchers say.

When told about a strange, fanged fish that had washed ashore on an Oregon beach, the Seaside Aquarium folks knew what kind ...

Deep-sea fish adapt to some of the most extreme conditions on Earth. New research analyzing their evolution finds the same ...

An oddly shaped deep-sea fish recently washed up on an Oregon beach, catching the attention of a local aquarium. The Seaside Aquarium identified the fish as a longnose lancetfish.

Technically, we are all fish by ancestry, even if it sounds strange. The real distinction comes down to evolutionary branches, adaptations, and the environments creatures inhabit. Even now ...

A strange video from the South Atlantic Ocean showed parasites on a deep-sea fish. These parasites, Lophoura szidati copepods, looked like they had pigtails. They clung to the head of a rattail ...

Scientists sampled fish living in the Pacific's Mariana Trench and trenches in the Indian Ocean. . | Credit: Han Xu et al. (2025) Evolution and genetic adaptation of fishes to the deep sea.